It was Nigeria’s first appearance at the continental tournament.
Presidents Cyril Ramaphosa and William Ruto jointly announced this agreement on Wednesday.
Tobi Amusan is now ranked 5th in the world while Ese Brume jumped to 61st position in the latest world rankings.
The CAF verdict means that Sao Tome will replace Mauritius in Group A alongside Nigeria, Sierra Leone and Guinea-Bissau.
Nigeria will take on Sierra Leone in Abuja June 9, before facing Mauritius on Monday June 13.
Nigeria and Mauritius have retained their seats to serve for another four years in the UN Committee on Economic, Social and Cultural Rights.
The donation comes as African countries struggle to vaccinate a fraction of their population.
Afreximbank, which facilitated the procurement of the Johnson & Johnson, Janssen Pharmaceuticals’ vaccine, says the vaccine costs Nigeria $7.50 per dose.
